APA Style

dimond-bayir, S. (2014). Improve your skills writing for IELTS with answer key 6.0-7.5 (1). London: Palgrave Macmillan.

MLA Style

dimond-bayir, Stephanie. "Improve your skills writing for IELTS with answer key 6.0-7.5". 1 London: Palgrave Macmillan, 2014. Text.